Autonomous system
AS11520 ALLSTATE-INSURANCE-CO
Unclassified ARIN
Summary
Allstate Insurance Company
enterprise legacy
ALLSTATE-INSURANCE-CO is Allstate Insurance Company, one of the largest US property and casualty insurers. The AS carries Allstate's own corporate network.
What it's used for
- Enterprise connectivity for a very large insurer: data centres, corporate offices, the agent network, claims and policy systems, and public-facing customer portals.
- RIS sees 69 announced IPv4 prefixes totalling 66,304 addresses, no IPv6, and only 5 observed BGP neighbours. That ratio is the whole story. Sixty-six thousand addresses is carrier-scale by address count alone, but five neighbours is not: a wholesale network of that size would peer with hundreds to thousands of ASes. Allstate is a large end site buying transit, not a network selling it.
Notable
- Nearly the entire inventory is a single legacy
167.127.0.0/16, announced both as its constituent /19s (167.127.0.0/19,167.127.32.0/19,167.127.64.0/19and so on, covering the whole /16) and as smaller /20s through /23s inside them. Announcing a /16 as eight /19s plus dozens of more-specifics is deliberate internal segmentation and traffic engineering, not a scattered inventory. - One prefix,
198.207.185.0/24, registers to American Heritage Life Insurance Company rather than to Allstate. That is a corporate-history artifact, not third-party space: American Heritage Life is an Allstate subsidiary, the entity behind the Allstate Benefits workplace-benefits business. A registrant that differs from the holder only matters when the registrant is genuinely unrelated, and this one is inside the same group.
Interesting
- The
167.127.0.0/16is a legacy allocation held directly by the company, the kind of block that predates any real scarcity in IPv4. That Allstate still runs it whole, with no IPv6 announced at all, says something about how conservative large insurer networks remain.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 56 prefixes · 66.30K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 56 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11520- Registry name
- ALLSTATE-INSURANCE-CO
- Registrant
- Allstate Insurance Company
- Abuse contact
- dnsadmin@allstate.com
- Registered
- 1998-09-16
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 69 with no ROA
- ROAs
- 0 authorising AS11520
- ASPA
- no ASPA record
- IRR
- 100% registered · 69 of 69 announcements
- Route objects
- 26 naming AS11520
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere